MAX5079 Overview
The MAX5079 ORing MOSFET controller replaces ORing diodes in high-reliability redundant, parallel-connected power supplies. Despite their low forward-voltage drop, ORing Schottky diodes cause excessive power dissipation at high currents. The MAX5079 allows for the use of low-on-resistance n-channel power MOSFETs to replace the Schottky diodes.
MAX5079 Key Features
- 2.75V to 13.2V Input ORing Voltage
- 1V to 13.2V Input ORing Voltage with 2.75V Aux Voltage Present
- 2A MOSFET Gate Pulldown Current During Fault Condition
- Ultra-Fast 200ns, MOSFET Turn-Off During Fault Condition
- Supply Undervoltage and Bus Overvoltage Detection
- Power-Good (PGOOD) and Overvoltage (OVP) Outputs for Fault Detection
- Space-Saving 14-Pin TSSOP Package
- 40°C to +85°C Operating Temperature Range